Cluster within and between Groups
Cluster within and between Groups
cluster_within_group(mat, factor)
mat |
A matrix where clustering is applied on columns. |
factor |
A categorical vector. |
The clustering is firstly applied in each group, then clustering is applied
to group means. The within-group dendrograms and between-group dendrogram
are finally connected by merge_dendrogram
.
In the final dendrogram, the within group dendrograms are enforced to be flat lines to emphasize that the within group dendrograms have no sense to compare to between-group dendrogram.
A dendrogram
object. The order of columns can be retrieved by order.dendrogram
.
m = matrix(rnorm(120), nc = 12) colnames(m) = letters[1:12] fa = rep(c("a", "b", "c"), times = c(2, 4, 6)) dend = cluster_within_group(m, fa) grid.dendrogram(dend, test = TRUE)
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